package com.itfs.service;

public class test {
    public static void main(String[] args) {

        Integer a = 100 , b = 100, c = 150, d = 150;
        Long e = 150L;


        Point start = new Point(2,3);
        Point end = new Point(3,4);
        Line line = new Line(start, end);
        System.out.println(line.length());
    }



/*
* 判断这个类的
*
* */

}
